Is CVE-2007-4000 being actively exploited?

CVE-2007-4000 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2007-4000?

CVE-2007-4000 has a CVSS 2.0 base score of 8.5 (HIGH).

CVE-2007-4000

HIGH · CVSS 8.5EPSS 6.1%EU EUVD

The kadm5_modify_policy_internal function in lib/kadm5/srv/svr_policy.c in the Kerberos administration daemon (kadmind) in MIT Kerberos 5 (krb5) 1.5 through 1.6.2 does not properly check return values when the policy does not exist, which might allow remote authenticated users with the "modify policy" privilege to execute arbitrary code via unspecified vectors that trigger a write to an uninitialized pointer.

Key facts

CVSS score: 8.5 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:M/Au:S/C:C/I:C/A:C
Weakness (CWE): CWE-824
EPSS score: 6.1% (93th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2007-3984)
Published: September 5, 2007
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2007-3984 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.

View on the EU Vulnerability Database

Affected products

fedoraproject / fedora
mit / kerberos 5

References

http://secunia.com/advisories/26676(Broken Link)
http://secunia.com/advisories/26680(Broken Link)
http://secunia.com/advisories/26700(Broken Link)
http://secunia.com/advisories/26728(Broken Link)
http://secunia.com/advisories/26783(Broken Link)
http://secunia.com/advisories/26987(Broken Link)
http://securityreason.com/securityalert/3092(Broken Link)
http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2007-006.txt(Vendor Advisory)
http://www.gentoo.org/security/en/glsa/glsa-200709-01.xml(Third Party Advisory)
http://www.kb.cert.org/vuls/id/377544(Third Party Advisory, US Government Resource)
http://www.mandriva.com/security/advisories?name=MDKSA-2007:174(Broken Link)
http://www.novell.com/linux/security/advisories/2007_19_sr.html(Broken Link)
http://www.redhat.com/support/errata/RHSA-2007-0858.html(Third Party Advisory)
http://www.securityfocus.com/archive/1/478794/100/0/threaded(Third Party Advisory, VDB Entry)
http://www.securityfocus.com/bid/25533(Broken Link, Third Party Advisory, VDB Entry)
http://www.securitytracker.com/id?1018647(Broken Link, Third Party Advisory, VDB Entry)
http://www.vupen.com/english/advisories/2007/3051(Broken Link)
https://bugzilla.redhat.com/show_bug.cgi?id=250976(Issue Tracking)
https://exchange.xforce.ibmcloud.com/vulnerabilities/36438(Broken Link, VDB Entry)
https://issues.rpath.com/browse/RPL-1696(Broken Link)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9278(Broken Link)
https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00087.html(Mailing List)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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